Electrode-collar for electric furnaces.



E. R. TAYLOR. ELEGTRODB COLLAR FOB. ELECTRIC PURNACES.

APPLICATION FILED JANJ?, 1911.

1,028,150, Patented June 4, 1912.

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E.. R. TAYLOR. ELBGTRODE COLLAR FOR ELECTRIC FURNAGES.

APPLICATION FILED mlm?, 1911. 1,028, 1 50. Patented June 4, 1912.

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a f/f/W/ il z@- 024 ,0' b w Z5 l5/QQ' Z ffm/W x w anni/wut EDW`ARD '1%.TAYLOR, OF PENN YAN, NEW YORK.

`ELECTR0132E-COIILAIR, FOR FECTRIC 'FURNAGES Specication of LettersPatent.

Patented June 4, 1912.

Application led January 17, 1911. Serial No. 603,059.

To all whom; t may concern:

Be it known that I, EDWARD R. TaYLoR, a citizen of the United States ofAmerica, and

a resident of Penn YYan, in the State of' New York, have invented a newand useful Improvement in Electrode-Collars for Electric Furnaces, ofwhich the following is a specification.

ThisV invention relates to those electric furnaces in which endwisemovable stemless electrodes, square in cross section, are employed;especially horizontal or inclined electrodes, hereinafter referred to incommon as horizontal electrodes.

Primarily this invention is additional to an improvement in electricsmelting furnaces set forth in my previous specification forming partvof an application for United States Letters Patent filed July 7, 1910,and allowed' July 27, 1910, Serial No. 570,836; (Patent No. 985,226,dat'edl February 28, 1911) hereinafter referredto as mycompanionspecification.

The leading objects of the present inven-l tion are to provide forclosing the electrodeadmitting opening in the furnaceA 'shell aroundeach electrode against 'the entrance of air and the escape of gas; andto provide, if desired, for the transmission of the electric current bythe same means.

Other objects will be set forth in the general description whichfollows:

Two sheets of drawings `accompany -this specification, as part thereof.v

Figures 1- and 2 are respectively a central longitudinal section andaface view of anA electrode collar constructed in accordance with thepresent invention; Figs. 3 and 4 are like views illustrating a. secondspecies of the same invention; Figs. 5 and 6 are like views illustratinga thirdspecies;

Figs. 7 and 8 are like views illustrating. a fourth species; and Fig. 9is a fragmentary section in a diagonal plane on the line as, Fig. 8. i

Like reference characters refer to like parts in all the gures.

-A stemless electrode of carbon, square in cross section, andperiodicallymovalle endwise by suitable means, to take up wear, isrepresented .at a; the iron shell of an electrlc furnace at b; metallicelectrode collars at c, c, c3 and of, respectively; and an interosedlayer of suitablel insulation'l at d.,

ach of saidA electrode collars includes asulicient number of movablesections of different patterns or proportions, represented respectivelyat 1, 2 and 3; means for tightening such sections and forr'etr'actingt-he same to free the electrode, in the form of screws, 4, parallel withthe electrode; an'd a rectangular frame, 5, which may be an ironcasting, constructed to interact with said sections, and to be iXedlyattached to thev furnace shell by insulated bolts, represented by boltholes, 6, in' the face lviews, and further insulated from the shell bysaid insulation d. The movable sections 1, 2 and 3,

jointly, in each species, are adapted to maintain the required contactswith the several sides and angles of the electrodeva, with the frame 5and with each other, under different adjustments.

. `In each species arectangular electrode admitting opening, 7 is commonto the'furnace shell b, the collar frame and the interposed insulationd; the frame 5 is fur` ther constructed with a deep face recess, 8,having four sides parallel with those of said opening, 7 and with thesides of the electrode a; screw sockets, 9, are provided to interactwith the several screws 4; the several movable sections 3 .which contactwith said screws are held to said recess sides or to corresponding wallsof the face recess by dovetailed guides, 10, so as to move parallel withthe electrode; said movable sections 3,`,

hereinafter referred to asithe outer sections, and the inner movablesections 1, and 2, re-

spectively, are constructed with wedging in-I `eled collar, 11 or 11',within said face recess,

to make an air and gas-tight closure around ,the electrode admittingopening, the bevels being so formed as to loosen said sections shouldthey be carried with the electrode in the feeding operation representedby the arrow a', Fig. l; the outer sections' 3 are provided on the backofeach at its outer lend with a rigid lug 12 or a pair of such lugs;each of the screws 4 is constructed with a squared outer end, and withparallel collars 13 and 14, Fig. 9, adjacent thereto to interact withsaid lugs 12; and a cooling chamber, 15, is conveniently formed in theframe 5 around said face recess 8 to provide for cooling the movablesections 1, 2 andy and the screws 4.

In the species represented by Figs. '1 and 2 there-are fourl of each ofsaid 'movablel outer sections 3 each interact with a pair" of thescrews4; and they beveled collar 11. within the. face recess 8I is integralwith the back of the frame 5.

In the species represented by Figs. 3 and 4, the electrode collar, c2,includes eight of l the inner sections land 2; four of the same beingside pieces 1, and four corner-embracing pieces 2; there are twelveouter sections V3, three at each side of the face recess 8,

with a screw 4 to each outer section; and two outer sections interactwith each cornerembracing piece 2 ofVY the inner sections so as toprovide a better contact with the electrode corners or angles. Otherwise-the construction may be the same as already described.

In the species represented by Figs. 5 and 6, the electrode collar, c3,includes twelve of the inner sect-ions 1 and 2, having adjoining bevels,the planes of which are diag-- onal to the electrode at its severalangles, and elsewhere at right angles and parallel to such diagonalbevels, as shown in Fig.I 6. Otherwise the construction may be identicalwith that of the first species, Figs. 1 and 2; including four outersections 3, and eight of the screws 4.

In the electrode collar 0*, represented by Figs. 7, 8 and 9, thereare'four of each of the movable sections 1, 2 and 3, vand the innersections consist of side pieces 1 and corner pieces 2, as in the irstspecies, Figs. 1 and 2; but the faces of the corner pieces 2 are atright angles to the diagonals of the electrode, and contact withmatching bevels on the side pieces; the outer sections 3 are` arrangedbehind the several corner pieces 2 las above described, and withincorner extensions of the face recess 8; the screws 4 are reduced to fourin number; the dovetailed lguides y10 are located within such cornerextensions, as shown in dotted lines in Figs.= 8 and 9, and the beveledco1- lar, 11', is a separate partto facilitate giving it any requiredbevel at the inner end of each of the movable sections or `such asrequire this provision. 4'

The electrode collar, in any of its formsI may, if desired, be adaptedfor the connection of the current conductors in the manner set forth insaid companion specification forming part of said patent applicationSerial No. 570836, (Patent No. 985,226) or in any known or improved way;each of the movable parts may have more or less movement as required,and otherlike modi- The interior of the collar at and in the vicinity ofthe beveled-collar 11 or 11 may be coated with a suitableclay washimmediately before tightening the movable sec-y tions to insureair-tight andV gas-tight joints; and if the collar is'to be used for thetrans- 'mission of the current tothe electrode, the

sides of that portion of the electrode which is to be embraced by thecollar may be coated -with carbon cement to insure the required perfectcont-act at all points.

Having thus described said improvement, I claim as my invention anddesire to patent under this specification: l1. The combination withastemless furnace electrode rectangular in cross section, especially asquare horizont-al electrode, of an' air-tight and gas-tight electrodecollar adapted to be iXedly attached to the furnace and composed of aframe constructed with an electrode-admitting opening, and a face recesssurrounding said opening, movable sections arranged within said recessand longitudinally with reference to the'elec- `electrode, square incross section; said collar having, in combination, a metallic frameconstructed with an electrode admitting opening and a face recesssurrounding said opening, inner movable sections within said Irecessconstructed and arranged to contact with the electrode and with eachother and having longitudinal wedging -inclines on their backs, endwisemovable outer sections having wedging inclines in contact with 'thoseof'said inner sections, and means for moving said outer sections endwiseto tighten or loosen said inner sections around the electrode.

3. An electrode collar adapted to be attached to and insulated vfrom theshell of an electric lfurnace, and to interact with an `electrode squarein cross section; said collar having, in combination, a metallic frameconstructed with an electrode admitting opening and a face recesssurrounding said opening, movable sections within said recessconstructed and arranged to contact vwith the electrode and with eachother to prevent the entrance ofair and the escape of gases through saidopening, said sections including endwise movable wedging sections, andsaid frame and wedging. sections being constructed-with the respectivemembers of a dovetailed guide for each of theseV sections, and means formoving these sec-y' tions endwise to tighten or loosen the movable'sections of the collar as required;

4. An electrode collar adapted to be attached to and. insulated fromthe. shell of' an electric furnace, and to interact with an electrodesquare in cross section; said collar having, in combination, a metallicframe constructed `with an electrode admitting opening and a face recesssurrounding said opening, inner movable sections withinsaid recessconstructed and arranged to contact with the electrode and with eachother and having longitudinal wedging inclines on their backs, endwisemovable outer sections having wedging inclines in contact with those ofsaid innerrsections, said frame and outer'sections being constructedwith the respective members cfa dove-tailed guide for each lof the outersections, and means lfor moving these outer sections endWise to tightenor loosen said inner sections around the electrode.

5. An electrode collar adapted to bey attached to and insulated from theshell of an electric furnace, and to interact with an electrodesquare incross section; said collar having, in combination,a metallic' ai'econstructed with an .electrode :admitting opening and a face recesssurrounding said opening, and provided within said recess and aroundlsaid opening with a beveled collar, inner movable sections within said,recessconstructed and arranged to contact with the electrode and witheach other and having longitudinal inclines on their backs and bevelsat. their inner ends, endwi'se movable outer sections havinglongitudinal inclines in contact with those of said in ner sections, andmeans' for moving these-,outer sections endwise to tighten or loosenlsaid inner sections around the electrode; said' bevels of theinnersections being constructed and arranged to contact with saidbeveled collar around the electrode admitting opening. c

-6 .`An electrode collar adapted to be attached to and insulated from.the shell of an electric furnace, and to interact with an electrodesquare in cross section; said collar having, lin combination, a metallicframe constructed -with an electrode admitting opening, a face recesssurrounding said openlng and screw sockets inthe faceof the 'frame arondsaid-recess, movable sections within said recess constructed andarranged to contact with the electrode and with each other and includingendwise movable wedging section'sfsaid frame and 'said wedgingsectionsbeing constructedwith the respective members of a dovetailed guide foreach of these sections parallel to, the respective screw, sockets, andscrews tted to saidy sockets and constructed and arranged` to operatesaid wedging sections as required.

7. An electrode collar adapted to' be attached to and insulated from theshell of an electric furnace, and to interact withlan electrode squarein cross section; said collar having, in combination, a metallic frameconstructed with an elect-rode admitting opening, a face recesssurrounding said opening and screw sockets in the .face of Vthe frameparallel to the electrode, inner movable sections within said recessconstructed and arranged to contact.- with the electrode and with eachother and having longitudinal wedging inclines on their backs, endwisemovable outer sections having wedging inclines in contact with those ofsaid inner sect-ions, said frame and outer sections being constructedwith the respec tive members of a dovetailed guide for each of theseouter sections, and screws fitted to saidsockets; said outer sectionsandscrews being constructed and arranged to coperate in tightening orloosening said inner sections aroundV the electrode.

8. An electrode collary adapted to be attached to and insulated 'fromthe shell of an electric furnace, and `to interact withan electrodesquare in cross-section; said collar having, in combination, a metallicframe constructed with an electrode admitting opening and a face recesssurrounding said opening, land provided within said recess and aroundsaid opening witha beveled collar, operating screws fitted to saidsockets,

inner movable sections within said recess constructed and arranged tocontact with the electrode and with each other and havinglongitudinal'wedging inclines on their backs and bevels attheir innerends, the latter constructed and arranged to contact with said beveledcollar, and endwise movable outer sections having longitudinal wedginginclines in'contact with those of said inner sections. and constructedand arranged to cooperate with`said screws in tightening or looseningsaid inner sections around the electrode.

9. An electrode collar adapted to be attached to and insulated from theshell of an electric furnace, and to interact with an electrode squarein cross section; said collar having, in combination, a metallic frameconstructed with an electrode-admitting openingand a face recesssurrounding said opening, movable sections within said recessconstructedand arranged to contact `with the electrode and with each other andincluding side pieces and corner pieces constructed and arrangedrespectively to conl tact with the several sides of the electrode andwithrits angles, andmeans for operat- ,ing said sections'to tighten orloosen the same around the electrode as required.

10. An electrode collar adapted to be. at-

"tached to and insu-lated from .the shell'offan 1 electric furnace,andto interact with an electrode square in cross section; said collarvhaving, in combination, a metallic frame constructed with an electrodeadmitting opening and a face recess surrounding said opening, innermovable sections within said recess constructed and arranged to contactwith the electrode and with each other and including side pieces andcorner pieces constructed and arranged respectively to contact with theseveral sides of the electrode and with its angles and havinglongitudinal Wedging inclines on their backs, endwise movable outersections having wedging inclines in contact with those of said innersections, said frame and outer sections being constructed with therespective members of a dovetailed guide'A for each of these outersections, and means for moving these outer sections endwise to tightenor loosen said side pieces and corner pieces around the electrode.

l1. An electrode collar adapted to be attached to and insulated from theshell of an electric furnace, and to interact with an electrode squarein cross section; said collar having, in combination, a metallic frameconstructed with an electrodeadmitting opening, a face recesssurrounding said opening and screw sockets in the face of the frameparallel to the electrode, operating screws fitted to said sockets,innermovable sections within said recess constructed and arranged tocontact with each other and including side pieces and corner pieces con.

structed and arranged respectively to contact with the several sides ofthe electrode nal Wedging inclines on their backs,and

endwise movable outersections having lons gitudinal wedging inclines incontact with those of said side pieces and corner pieces and.constructed and arranged to coperate with said screws in tightening orloosening the inner sections around the electrode.

12. An electrode collar adapted to be attached to and insulated from theshell of an electricfurnace, and to interact with an electrode square incross section; said collar having, in combination, a metallic frameconstructed with an electrode-admitting opening, a face recesssurrounding said opening and screw sockets in the face of the frameparallel to the electrode, operating screws fitted to said sockets,inner movable sections-within said recess .constructed and arranged tocontact with each other and including side pieces and corner piecesconstructed and arranged respectively to contact with the several sidesof the electrode and with its angles and having longitudinal wedginginclines on their backs, and end- Wise. movable outer 'sections havinglongitudinal wedging inclines in contact with those of said side piecesand corner pieces and constructed and arranged to coperate with saidscrews in tightening or loosening the inner sections around theelectrode; said frame and outer sections being further constructed withthe respective members of a dovetailed guide for each of the outersections parallel to the respective screws; substantially ashereinbefore specified.

EDWARD R. TAYLOR.`

Witnesses;

H. J. MAcNAUGH'roN, H. P. MORGAN.

